Over time an Ezine author will produce lots of articles on phones. These can then be archived in many places on the Internet that store Ezine articles on phones.
People who have rare and high demand information on phones could charge a small fee to subscribers. However experience has shown that the free ezines do best. Never forget that literally hundred's of people on the Internet are interested in phones and a phones Ezine will have a targeted audience from day one.
Talk On The Net Resources phones to custom phone cards